* usb card reader not detect hotplug of sd/cf cards
@ 2007-06-18 7:42 Manfred Gruber
2007-06-18 12:00 ` Kay Sievers
0 siblings, 1 reply; 2+ messages in thread
From: Manfred Gruber @ 2007-06-18 7:42 UTC (permalink / raw)
To: linux-hotplug
hi !
I have problem with a SMSC USB2227/2228 card reader on a embedded device that
it does not detect hotplugging of the cards.
if no sd/cf card is in the slot at booting i get (2.6.22-rc4):
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 3 ports detected
Initializing USB Mass Storage driver...
usb 1-2: new low speed USB device using ep93xx-ohci and address 2
usb 1-2: configuration #1 chosen from 1 choice
usb 1-3: new full speed USB device using ep93xx-ohci and address 3
usb 1-3: configuration #1 chosen from 1 choice
hub 1-3:1.0: USB hub found
hub 1-3:1.0: 4 ports detected
usb 1-3.1: new full speed USB device using ep93xx-ohci and address 4
usb 1-3.1: configuration #1 chosen from 1 choice
scsi1 : SCSI emulation for USB Mass Storage devices
usbcore: registered new interface driver usb-storage
USB Mass Storage support registered.
...
scsi 1:0:0:0: Direct-Access Generic Flash HS-CF 4.44 PQ: 0 ANSI: 0
sd 1:0:0:0: Attached scsi removable disk sda
sd 1:0:0:0: Attached scsi generic sg0 type 0
scsi 1:0:0:1: Direct-Access Generic Flash HS-MS 4.44 PQ: 0 ANSI: 0
sd 1:0:0:1: Attached scsi removable disk sdb
sd 1:0:0:1: Attached scsi generic sg1 type 0
scsi 1:0:0:2: Direct-Access Generic Flash HS-SM 4.44 PQ: 0 ANSI: 0
sd 1:0:0:2: Attached scsi removable disk sdc
sd 1:0:0:2: Attached scsi generic sg2 type 0
scsi 1:0:0:3: Direct-Access Generic Flash HS-SD/MMC 4.44 PQ: 0 ANSI: 0
sd 1:0:0:3: Attached scsi removable disk sdd
sd 1:0:0:3: Attached scsi generic sg3 type 0
if I then insert a card i have to do:
echo 1 > /sys/block/sdd/device/rescan
SCSI device sdd: 62720 512-byte hdwr sectors (32 MB)
sdd: Write Protect is off
sdd: assuming drive cache: write through
and then the device is there.
are there on normal linux workstations some daemons running which detect
hotpluging of such devices periodically or how is this handled.
my problem is that on my workstation hotplugging of cards gets detected, but
on the embedded device not.
so dose someone have an idea what to do, or make a small daemon which dose a
echo 1 > /sys/block/sdX/device/rescan periodicall ?
or are there already some daemons which do this job ?
thanks a lot for help
regards
manfred
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^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: usb card reader not detect hotplug of sd/cf cards
2007-06-18 7:42 usb card reader not detect hotplug of sd/cf cards Manfred Gruber
@ 2007-06-18 12:00 ` Kay Sievers
0 siblings, 0 replies; 2+ messages in thread
From: Kay Sievers @ 2007-06-18 12:00 UTC (permalink / raw)
To: linux-hotplug
On 6/18/07, Manfred Gruber <m.gruber@tirol.com> wrote:
> I have problem with a SMSC USB2227/2228 card reader on a embedded device that
> it does not detect hotplugging of the cards.
>
> if no sd/cf card is in the slot at booting i get (2.6.22-rc4):
>
> if I then insert a card i have to do:
>
> echo 1 > /sys/block/sdd/device/rescan
> SCSI device sdd: 62720 512-byte hdwr sectors (32 MB)
> sdd: Write Protect is off
> sdd: assuming drive cache: write through
>
> and then the device is there.
>
> are there on normal linux workstations some daemons running which detect
> hotpluging of such devices periodically or how is this handled.
>
> my problem is that on my workstation hotplugging of cards gets detected, but
> on the embedded device not.
>
> so dose someone have an idea what to do, or make a small daemon which dose a
> echo 1 > /sys/block/sdX/device/rescan periodicall ?
>
> or are there already some daemons which do this job ?
Usually it is HAL (hald) which polls for media changes. You have to
open() the the device node (/dev/sdX) every few seconds and media
changes will be recognized.
Kay
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^ permalink raw reply [flat|nested] 2+ messages in thread
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2007-06-18 12:00 ` Kay Sievers
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